Heel-breasting machine



Oct. 21 1924 L. A. CASGRAIN v -.HEEL BREASTING MACHINE Filed June 14. 1920 4' Sheets-Sheet 2 Oct. 2 1. 1924;.

' Filed June 14 1920 L. A. CASGRAIN HEEL BREASTING MACHINE 4 Sheets-Sheet 5 (Jet, 2 1 1924.

L. A. CASGRAIN HEEL BHEASTING MACHINE Filed June 14 Patented Oct. 21, 1924.

LOUIS A. CASGRAIN, OE BEVERLY, MASSACHUSETTS, AS SIGNOB TO UNITED SHOE .MACI-IINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HEEL-BREASTING IVIACHINE.

Application filed June 14, 1920. Serial No. 388,847.

7 '0 all whom it may concern.

Be it known that I, LOUIS A. OAsenAIN, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Im- 10 drawings indicating like parts in the several figures.

This invention relates to machines for operating upon heels and particularly to machines for trimming the breast portions of shoe heels, the illustrative embodiment of the invention herein shown being organized for breasting French or Louis heels after their attachment to shoes.

An object of the present invention is to provide an improved machine of the type disclosed in my prior application Serial No. 197,889, filed October 22, 1917, while retaining all the desirable features and advantages of said type of machines.

In the use of such machines as previously organized it is found difficult, under some conditions, to secure exact uniformity of,

the shape of the heels, even of shoes which were ostensibly of the same size and style. This difficulty was due, among other things, to the fact that a shoe coming to the breaster may not have had the tread face of the forepart and the tread face of the heel in the same plane or even in parallel planes. Hence a shoe positioned by means engaging the tread face of the forepart and the tread face of the heel as in my prior machine, on the assumption that they were in the same plane, would, if this were not the fact, have a differently shaped heel than one in respect to which this assumption was true. A feature of the present invention consists in means for positioning a shoe held in the opcrators hands, having a heel attached, in its longitudinal median plane by engagement with the heel only, the longitudinal median plane of the shoe being understood to be a plane extending centrally lengthwise of the shoe substantially perpendicular to the shoe bottom. As herein shown the heel is positioned by a tread rest and by a member engaging the rear face of the heel adjacent to the heel seat. The member is arranged for adjustment longitudinally of the shoe so that it may be brought into engagement with heels of different shapes which may or may not have their tread faces flat against the tread rest. Preferably clamping means operable by the hand of the operator which holds the rear end of the shoe is provided which clamps the heel in the position in which it is located by the positioning means.

Another feature of the invention consists in novel means for positioning the forepart of the shoe in the plane of the sole. Since, as above explained, the shoe is positioned in its longitudinal median plane by means engaging the heel only, it is desirable in addition to. provide means for locating the shoe in the plane of the sole to control the swing of the shoe. As shown two abutments are provided which are moved equally and oppositely, preferably by a screw, and may beset the proper distance apart to hold the shoe and prevent movement of the shoe in the plane of the sole while permitting movement of the shoe in, its longitudinal median plane as required by the heel positioning means. If it is desiredto breast. the

heels, rights and lefts, that is, to provide I equal and opposite inclinations of the breasts of the heels of shoes of a pair'relatively to the longitudinal median plane, the abutments may be separated as desired and one shoe of the pair held in position against one of the abutments and the other shoe of the pair held against the other abutment, To provide for different positions of the shoes in their longitudinal median plane the abutments are made of considerable extent in a direction perpendicular to the soleandi with their shoe-engaging faces perpendicular to the tread face of the sole.

In the machine of my prior application the shoe rest or support isoperated by power to carry the heel across the acting face of the breasting cutter and to position the shoe opposite the scalloping cutter. After the operation of the latter cutter the shoe support may be moved away from the cutter and then returned to initial position by gram ity or may be moved down manually. It is desirable that this return movement beeffected without shock or jar and accordingly a feature of the invention consists in means by which the supportis returned to initial position against frictional resistance and under power of the machine.

In machines of the type to which the present invention relates rotary cutters are driven at very high speed, requiring the driving belt to be quite tight in order to transmit the necessary power when the cutters are at work. Heretofore the necessary belt tension has been maintained when the cutters are running idle, thus subjecting the cutter shaft bearings to unnecessary strain and to excessive wear since a lighter tension when the cutters are running idle is suflicient to maintain the cutters at their normal speed. A further feature of the-invention consists in means for transmitting more power to the cutters while the cutters are working and less power when they are idle. As shown herein means is provided for tightening the cutter belt prior to and during its cutting action and allowing the tension to be relieved during idle running of the cutter. The machine as herein shown is provided with a work support operated by power to carrythe work across the field of operation of the rotary cutter, and a frictionaliconnection is provided between the work support operating means and the belt tightener to cause the belt 'tightener to press upon the belt with a constant pressure during the operation of the work support to carry the work across the cutter. When the work support is at rest the frictional connection is insuflicient to maintain the belt tension which consequently is relieved during idle running'of the cutter.

A further feature of the invention consists in improved means for locating the heel relatively to the scalloping cutter such that heels of varying shapes will be scalloped uniformly. As shown herein thescalloping cutter is provided with a movable shield or guard which is moved to expose the cutter in conjunction with movement of the shoe support toward the cutter, and on the shield is a stop located at a predetermined distance radially of the cutter and positioned by-movement of the shield to be engaged by the heel breast at a point adjacent to the cutter and to limit the cutting action of the cutter.

These and other features of theinvention will appear more fully from the following detailed description when read in connection with the accompanying drawings and will be pointed out in the appended claims.

In the drawings, 7 j

Fig. 1 is a front elevation of a machine embodying this invention; r

Fig. 1 is a sectional detail of parts shown in Fig. 1; V V

Fig. 2 is a side elevation of the upper por tion of the machine;-

Fig. 3 is a detail View in plan of shown in Fig. 2;

Fig. 4 is a side elevation of the lower porparts tion of the machine;

Fig. 5 is a plan view, partly in section, showing a shoe being operated upon by the scalloping cutter;

Fig. 6 is a plan view, partly in section,

showing a shoe being operated upon by the breasting cutter; and y V Fig. 7 is a detail view of parts shown in Figs. 5 and 6.

Referring to Fig. 1 of the drawings, the numeral 2 indicates the column of the machine in which are bearings for a shaft 4 carrying tight and loose pulleys 6 and 8 respectively for the application of power to.

the machine. The shaft 4 carries a pulley 10 which is belted to each of two pulleys l6 and 18 mounted respectively on two shafts 20 and 22 which are mounted in bearings on r the frame 2, the belt 17 for the pulley 18 being outside of the belt 15 for the pulley 16. The cutter shaft 20 carries on one end a breasting cutter 24 and the shaft 22 carries on one end a scalloping cutter 26 located over the cutter 24.

The work support or carrier includes mech- ,port to be more fully described hereinafter.

The forepart of the shoe extends between two guides or gages 45, 46 which'are arranged for vertical sliding movement in an upright 48 (Fig. 7) having a stud 50 which is secured by a set screw 51 to an arm 52 (F 2) formed on the head 42. The gages 45, 46 are formed to engage a T-guide 53 milled in the upright 48 and are connected by a right and left threaded screw 54 having a thumb head 55 and held from longitudinal movement by a clip- 56 secured to the upright '48 and engaging a groove 57 in the screw. By turning the thumb head 55 the gages 45, 46 may be moved-toward and from each other equally and oppositely and may be adjusted either to engage both'sides of the shoe at the same time and to prevent movement of the forepart of the shoe in the plane of the sole, or they maybe separated to any desired degree so that the shoe for one foot may be held against the upper gage 45 and the shoefor the other foot against the lower gage 46, the heels of the shoesfor different feet being thereby positioned for breasting the heels rights and lefts, that is, so that the plane of the breast face of a right heel will be formed at an oblique angle to the longitudinal median plane of the shoe and the plane of the breast face of a heel of a shoefor the left foot will be formed at an equal and opposite angle to the longitudinal median plane of the shoe. It will be noted that the shoe engaging faces of the gages 45, 46 are parallel and permit movement of the shoe and heel in the longitudinal median plane of the shoe without changing the angular relation of the plane of the breast face to be plane of movement of the shoe across the cutter. The rear end of the top lift of the heel engages a slide mounted in the plate 40 for movement longitudinally of the shoe, the longitudinal position of the heel being adjustably determined thereby. The slide 60 is adjusted by means of a screw 61 having threaded engagement with the slide 60 and being held from longitudinal movement relatively to the plate by means of a flange 62 on the screw which engages a suitable recess in the plate 40. The screw may be conveniently turned by a thumb head 63. The plate 40 and slide 60 can not be relied upon alone properly to position the heel in the longitudinal median plane of the shoe by square engagement of the tread face of the heel with the plate 40 because the tread face of the heel is usually too small to provide sufficient area for this purpose and because the plane of the tread face is not always in the proper relation to the tread face of the forepart or to the direction of the height of the heel. Accordingly, means is provided to locate the heel definitely in the longitudinal median plane of the shoe with relation to the cutter consisting, as shown in Fig. 6, of an abutment 64 to engage the end of the heel adjacent-to the heel seat face. The abutment 64 is formed as an arm of an angle lever pivoted at 65 to the slide 60. The other arm 66 of the angle lever has threaded through it a screw 67 which engages the slide 60 and may be turned to vary the position of the heel engaging end of the abutment 64 longitudinally of the shoe. By means of the plate 40, the slide 60 and the abutment 64 the position of the heel relatively to the shoe support is fully determined merely by pressing the shoe rearwardly and inwardly except that the shoe may be rocked about an axis extending in the direction of the height of the heel. This movement, however, is taken care of by the gages 45 and 46, or, if desired, by adjusting the gages to engage both sides of the shoe at once such movement may be entirely prevented. The position of the heel in the longitudinal median plane of the shoe is thus determined with reference to the heel alone and hence the sizes and shapes of heels after breasting will be the same.

To enable the operator to hold the heel firmly during the breasting operation means similar to that described in my above mentioned prior application is provided comprising two pairs of clamping feet 68, 69 and 70, 71 (Figs. 5 and 6). The pair of feet 68, 69 engage opposite sides of the heel near the tread face and the pair of feet 70, 71 engage opposite sides of the heel near the heel seat face. The feet 68, are on levers 72,73 pivoted to a pin 74 mounted in the plate 40 and the feet 69, 71 are on levers 75, 76 pivoted on a similar pin 77 on the opposite side of the heel. The levers 72, are actuated by a wedge block 78 formed on an arm 79 pivoted by a pin 80 to a pair of arms 81, 82 held in fixed relation to the plate 40 by the passage of the pins 74, 77 through them. The wedge block 78 is forced between the ends of the levers 72, 75 to separate them and cause the feet 68, 69 to clamp the heel by a screw 83 carried by an operating lever 84 also pivoted on the pin 80 and having its ends extending in such relation to the shoe that the hand of the operator which holds the shoe and positions it against the plate 40, slide 60 and abutment 64 may operate the lever to cause the feet 68, 69 to clamp the shoe adjacent to its tread face. The levers 73, 76 are oper ated by a wedge 86 on an arm 87 pivoted on the pin 80 which arm is curved to avoid interference of the block 78 and is bifurcated to embrace the lever 84. The wedge 86 is operated yieldingly from the lever 84 through a spring 88 on a rod 89. The rod is pivoted at 90 to the wedge 86 and extends loosely through the lever 84, being provided beyond the lever with retaining means comprising, as shown, a nut and lock nut to limitmovement of the lever b the spring 88 when the lever is released. peration of the lever 84, therefore, causes the wedge 86 to close the clamping feet 70, 71 yieldingly upon the heel through the spring 88, the spring permitting further movement of the lever to insure contact of the screw 83 with the wedge 78 and cause movement thereof to actuate the clamping feet 68,69 positively to clamp the heel.

The construction of the work support and the mechanism for operating it by power are similar in respects not herein explained to that disclosed in my prior application above referred to, to which reference may be had for a full description. The head 42 (Fig. 1) is fixed by its stem 44 to the upper end of a post -pivoted at 102 to a lever 104 to permit movement of the head toward and from the machine. A slight lateral swing ing movement of the post and head is permitted by a second pivot 106 (Fig. 4) extending lengthwise of the lever 104. This lateral movement is limited by a guiding member 108 which surrounds the post and also limits excessive outward movement of the post and head 42. The lever 104 is pivoted at 110 to the frame 2 and is operated to raise the work support by a connecting rod 112 connected to a crank 114.

The crank 114 is fixed to a shaft 116 mounted in suitable bearings on the frame and extending laterally from the machine, as shown in Fig. 1, for a purpose to be described. Mountedloosely on theshaft 116 is a worm wheel 118 which is rotated continuously by suitable reducing gearing connecting it with the shaft 4, as shown in Fig. 7 v I of the shaft 116 may be changed. Vhen the 4, and comprising a worm 120 which meshes with the worm wheel 118 and isfixed to a vertical shaft 121 carrying at its lower end a worm wheel 124 meshing with a worm 126 fixed to the shaft 4. Betweenthe worm wheel 118 and the shaft 116 is a clutch of theusual Horton type including a clutch disk having a single knock-off projection 128 which is engaged alternately by two stops 130, 132 mounted respectively on stop arms 134, 136 pivoted at 135, 137 to the frame and held toward each other by a spring 138. Between the arms 134, 136 is an arm 1'40 pivoted at 139 to the frame and arranged to engage a projection 142 on the arm 134 to release the stop 130 or a projection 143 on the arm 136 to releasethe stop 132. As shown in Fig 4, the stop 136 has just been released from the knock-off projection 128 to allow the clutch to go in and cause the crank 114 to rotate 180 degrees to raise the work support and carry the shoe past the cutter 24 and into operative relation to the cutter 26. The knockoff projection 128 thenengages the step 132 and the clutch is thrown out to cause the support to remain in raised position during the operation of the, scalloping cutter 26. The arm 140 is operated to control the clutch by connection to the work support comprising a link 141 pivoted at one end to the arm. 140 and at the other end to the post 100. When the post 100 of the work support is moved inwardly or toward the machine the stop 130 is-released to cause the work support to be raised, and when the post is moved outwardly away from the machine the stop 130 is released to cause the work support to be lowered. I I

While the work support is being raised to carry the work across the cutter it is desirable to transmit more power to the cutter shafts and this is effected by mechanism best shown in Fig. 1. Mounted loosely on. the lateral extension of the shaft 116 .is an arm 144 carrying at its upper end a belt tightening roll 146. On the shaft 116 are two collars 148, 149, one on eachside of the arm 144, the collars being arranged to rotatev with the shaft and the collar 148 engaging a shoulder on the shaft. The collars 148, 149 have notches which are engaged by projections on the opposite ends of a key 151 located in a groove or keyway inthe shaft 116, the portion ofthe key 151 within the arm 144 and washers 150 being entirely within the slot as shown in Fig. 1". Between each collar and the arm 144 is a friction washer 1 50. A spring 152 is arranged on the shaft between the collar 149 and a washer 154. held on the shaft by a nut 156 and set nut 157. By adjusting clutch is tripped by movement of the shoe toward the cutter24 the shaft 116 is caused to rotate in. a clockwise direction (Fig. 4);

The frictional connection described between V "the shaftand the arm 144'causes the arm to move in the same direction to press the belt tightening rolljl46' against the belts to tighten them and to maintain the tension of the belts constant during rotation of the shaft. When the shaft 116 remains at rest for any length of time the tightened belts overcome by their vibration, the friction'by which the arm 144 is held against the belt, allowing the belts to resume normal tension which is sufficient to maintain the speed of rotation of the cutters without-undue strain on the bearings, so that the wear on the bearings is greatly lessened when the cut ters are running idle. If desired the roll 146 may be held against the belt to maintain any desired normal tension thereon. For this purpose a stop screw 158 isthreaded through a lug on the arm 144 in position to engage the surface of the frame and limit counter-clockwise'movement of the arm. It may be desirableto tighten, by power op? eration of the arm144, only the belt of the cutter'24which has the most work to do. in that case the roll 146 will be arranged between the two overlying belts so that then only the inner belt. 15 will be tightened. During the second semi-rotation of the shaft 116 to lower the support the friction l/Vhen the support is moved away fro'mnthe I scalloping cutter the downward movement of the support is initiated. The shoe may now be immediately removed and placed on the rack and a new shoe taken up for treatment. As soon as the operator is ready to present the new shoe to the shoe locating means of the support, it .has been returned to lowered or normal position by power and without shock. 7

Improved means is provided for locating the heel relatively to the scalloping cutter 26, best shown in Figs, 3 and 5. The

scalloping cutter is provided with a shield or guard 160 which is mountedfor rotation about the axis ofthe shaft 22 as a center and is normally inthe position: shown in Figs. 1 and 2 to protect theoperators hand, from the cutter, being held in this position by a spring 162 (Fig.2). One end of a flexible connection 164 is connected to the cutter guard at 165 and extends over a suitable guide or roll 166 to the upper end of the link 112 (Fig. t). A spring 168 is connected to the link 112 and to an interm ediate portion of the flexible connection 164, so that when the link is in the position shown a suitable amount of slack of the flexible connection will be enclosed in the spring. The spring 162, which holds the guard in normal position, is stronger than the spring 168 so that when the link 112 is moved downwardly by turning of the crank 114 the spring 168 is first stretched to take up the slack in the flexible connection enclosed within it and the pull is then applied to the flexible connection itself to overcome the tension of the spring 162 and raise the guard 160, movement of the guard thus occurring during the later portion of the upward movement of the work support which carries the heel into operative relation to the scalloping cutter 26. Secured to the guard 160 is a stop 170 which is curved concentrically with the guard 160 and when the guard is raised is presented in position to arrest movement of the heel toward the cutter, as shown in Fig. 3. The direction of movement of the heel toward the scalloping cutter 26, after the shoe support is raised, is controlled by engagement of a stud 174 on the support with a slot 17 6 formed in a member 168 secured to the frame of the machine, and the depth of the scallop formed by the cutter in the heel breast is determined by engagement of the stop 170 with the heel breast, as shown in Figs. 3 and 5. Since the stop 170 is in predetermined relation to the surface 0 the cutter the depth of the cut made in different heels will be the same. If desired the stop 170 may be made adjustable radially of the cutter to vary the depth of cut.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine of the class described, the combination of a cutter for treating the heel breast, and shoe positioning means constructed and arranged to engage the heel only of a shoe presented thereto in the hands of the operator and acting to determine the position of the heel in the longitudinal median plane of the shoe.

2. In a machine of the class described. the combination of a rotary cutter for treating the heel breast, and shoe positioning means engaging the rear end face of the heel at a plurality of points spaced heightwise of the heel to determine the position of the heel relatively to the cutter.

3. In a machine of the class described. the combination of a cutter for treating the heel breast, and shoe positioning means to which the shoe is presented in the hands of the operator comprising a plurality of stops arranged one to engage the rear end of the heel adjacent to its tread face and the other to engage the heel adjacent to its seat face, said stops co-operating to determine the relative position of the heel and cutter in the longitudinal median plane of the shoe.

4. In a machine of the class described, the combination of a rotary cutter for treating the heel breast, shoe positioning means comprising a rest for the tread face of the heel, a stop engaging the rear face of the top lift, and a stop engaging the rear end of the heel adjacent to its seat face whereby the position of the heel in the longitudinal median plane of the shoe is determined.

5. In a machine of the class described, the combination of a rotary cutter for treating the heel breast, shoe positioning means engaging the rear end face of the heel at a plurality of points to determine the position of the heel relatively to the cutter, and means constructed and arranged to limit by engagement with the forepart of the shoe movement of the shoe about an axis extending in the direction of the height of the heel notwithstanding variations of position of the forepart in the longitudinal median plane.

6. In a machine of the class described, the combination of a rotary cutter for treating the heel breast, and shoe positioning means comprising av tread rest for the heel and means engaging the rear end of the heel at a plurality of points heightwise of the heel for determining the position of the heel relatively to the field of action of the f cutter.

7 In a machine, of the class described, the combination of a rotary cutter for treating the heel breast, and shoe positioning means comprising a tread rest for the heel and means arranged to engage the rear end of the heel adjacent to its tread face and adjacent to its seat face to determine the position of the heel relatively to the field of action of the cutter.

8. Ina machine of the class described, the combination of a rotary cutter for treating the heel breast, shoe positioning means comprising a rest for the tread face of the heel, a stop engaging the rear face of the top lift, and a stop engaging the rear end of the heel adjacent to its seat face whereby the position of the heel in the longitudinal median plane of the shoe is d termined relatively to the field of action of the cutter. V

9. In a machine of the class described, the combination of a rotary cutter for treating the heel breast, shoe positioning means engaging the rear end face of the heel at a plurality of points to determine the position of the heel relatively to the cutter, means constructed and arranged to limit-uniform- -ly, by engagement with the forepart of the shoe, movement of the shoe about an axis extending in the direction of the height of the heel notwithstanding variations of position of the forepart inthe longitudinal median plane of the shoe, and means for effecting'relative movement between the positioned shoe and the cutter to cause the cutter to breast the heel and produce heels of uniform size and shape.

10. In a machine of the class described, the combination of a rotary cutter, a. shoe support movable to carry the shoe across the acting face of they cutter, said support having positioning means arranged to engage the tread face and the rear end of the shoe heel at a plurality of points when the heel is pressed against them by'the hands of the operator, and means operated by the hand of the operator which. holds the shoe for clamping the shoe in the position determined by the positioning means.

llazIn a machine of the class described, the combination of a rotary cutter, a shoe support movable to carry the shoe across the acting face of the cutter, said support hav-.

ing positioning means arranged to engage the tread face and the rear end of the shoe heel at a plurality of points when the heel is pressed against them by the hands of the operator, means operated by the hand of the operator which holds the shoe for clamping the shoe in the position determined by the positioning means, and means for relatively operating the support and cutter to cause the heel to be treated by the cutter.

12. In a. machine of the class described, the combination of a rotary cutter, a shoe support movable across the cutter, means on the support for positioning the shoe by en 'gagement with the rear end face of the heel,

and forepart positioning means comprising members between which the forepart is positioned and which have extended shoe engaging surfaces perpendicular to the tread face of the shoe.

"13. In a machine of the class described, the combination of a rotary cutter, a shoe support movable across the cutter, means on the supportfor' positioning the shoe by engagement of the rear end face of the heel,

' members equally and oppositely.

14. In a machine of the class. described,

the'combinat-ion of a--rotary cutter, a shoe supportmovable to carry the shoe across the cutter to cause the cutter to breastthe heeland also movable toward and from the cutter, means responsive to manual movement "of' the shoe support away from the cutter to ca-u sethe support to be returned by power to normal position, and friction means for controlling the return movement of the support. r

15. In a machine of the class described, the: combination of a'rotary cutter, a shoe support movable to carry the shoe across the cutter to cause the cutter to breast theheel and also movable toward and'from the cutter, means including a one-way clutch responsive to manual movement of the shoe support away from the cutter to cause the support to be returned by power to normal position, and means for holding back the support to cause its return movement to be effected by power.

16. In a machineof' the class described, the combination of a. rotary'cutter, a shoe support movable to carry the shoe across the cutter to. cause the cutter to breast the heel and also movable toward and from the cutter,

means responsive to manual movement of the apport toward the cutter to cause the support to be moved across the cutter and stop in raised position, means responsive to manual 'iovement of the shoe support away from the cutter to causethe support to returnfto no anal position, and friction means for controlling the return movement of the support.

17. In a machine of the class described,

the combination of a rotary cutter, a shoe support movable upwardly tocarry the shoe across the cutter to cause the cutter to breast the heel, power means for raising the support, and frictional means for preventing the support from dropping and causing it to be lowered by power. r

18. In a machine for operating upon heels, belt driven heel trimming means, and means becoming operative as an incident to PTS D tation of the heel to the trimming means for increasing the tension on the belt during operation of the heel trimming means.

19.111 a machine of the class described, power driven means for operating upon a shoe, and means becoming operati-veas an incident to presentation of the shoe to the operating means for increasing the power applied to the operating means.

20; In a machine of the class described, the combination of a rotary cutter, a belt for driving the cutter, a work support, and means becoming operative upon movement of the support for causing and maintaining constant predetermined tension onv the belt during the action of the cutter on the work. 21. In a machine, of the class described, the. combination of a rotary cutter, abelt under normal light tension for driving the cutter, and means for causing and maintaining constant predetermined additional ten si'on on-the belt during theaction of the Cutter on the WOIk, i

22/In machine of the class described,

the combination of a rotary cutter, a belt for dr v ng the cutter, means for maintaining normal tension of the belt sufficient to maintain the cutter at normal speed when the cutter is running idle, and means constructed and arranged automatically to increase the tension of the belt during operation of the cutter.

23. In a machine for treating heels, the combination of a rotary cutter, a shoe support movable to carry the shoe heel across the cutter, means for effecting movement of the shoe support, and means for increasing the power transmitted to the cutter during operation of the cutter upon the heel.

24. In a machine for treating heels, the combination of a rotary cutter, a shoe support movable to carry the heel of the shoe across the cutter, means for effecting move ment of the shoe support, and means operated by the support moving mechanism for increasing the power transmitted to the cutter during movement of the support to carry the heel across the cutter.

25. In a machine for treating heels, the combination of a belt driven rotary cutter, a shoe support movable to carry the heel of the shoe across the cutter, means for effecting movement of the shoe support, and means including a belt tightener operated by the support moving mechanism for increasing the tension of the cutter belt during movement of the support to carry the heel across the cutter.

26. In a machine of the class described, the combination of a rapidly driven rotary cutter, a belt for driving the cutter, said belt being maintained at a normal light tension suflicient to maintain the speed of the cutter when idle, a shoe support, power means including a slowly rota-ting crank shaft for effecting relative movement between the cutter and support to cause the cutter to operate on the work, a belt tightener, and connections between the power means and belt tightener to cause the belt to be tightened during operation of the shaft.

27. In a machine of the class described, the combination of a rotary cutter for operating upon heels,a support arranged for movement to carry the heel into and out of operative relation to the cutter, power means for raising the support including a Horton clutch, and friction means to prevent the support from overrunning the clutch during descent of the support.

28. In a machine of the class described, the combination of a rotary cutter for operating upon the heel, a support arranged for vertical movement to carry the heel into and out of operative relation to the cutter, power means for raising the support including a one-way clutch, and friction means to prevent the support from dropping ahead of the clutch during downward movement of the support.

29. In a machine of the class described,

the combination of a scalloping cutter, a guard for the cutter, means for moving the guard to expose the cutter, and a stop mounted on the guard to engage the heel breast and limit the scalloping action of the cutter upon the heel.

30. In a machineof the class described, the combination of a rotary scalloping cutter, a guard for the cutter arranged to swing about the axis of the cutter, and a stop on the guard curved concentrically with the guard and brought into position by movement of the guard to arrest movement of the shoe heel toward the cutter.

31. In a machine of the class described,

the combination of a rotary cutter, a cutter guard movable to expose the cutter, and a shoe rest constructed and arranged to be moved into operative position upon movement of the guard to expose the cutter. 32. In a machine of the class described, the combination of a rotary cutter, a guard movable to expose the cutter, a shoe rest for positioning the shoe with respect to the cutter, and connections for presenting the shoe restin operative position when the guard is moved to expose the cutter.

33. In a machine of the class described, the combination of a rotary cutter, a guard movable to expose the cutter, a shoe carrier movable to bring the shoe into operative relation to the cutter, connections between the carrier and the guard for removing the guard when the carrier presents the shoe in operative relation to the cutter, and a rest for limiting movement of the shoe toward the cutter arranged to be carried into operative relation to the shoe upon movement of the guard.

In a machine of the class described, the combination of continuously power actuated means tor operating on a shoe, means movable to guide a shoe into operative relation to said operating means, a constantly rotating driving element, a belt connecting said driving element to the operating means, connections including a clutch for connecting the guiding means to the driving element, and means operated by said connections for applying tension to the belt.

35. In a machine of the class described, the combination with means for performing an operation on a shoe, of a shoe support movable toward and from said operating means, a constantly rotating driving element, a belt connecting said element to the operating means, a clutch for connecting said element to the shoe support to move the support, and means becoming operative when said clutch is tripped to tighten said belt.

36. In a machine of the class described, the combination of a belt driven cutter, a shoe support movable to present a shoe to the cutter, an idler pulley arranged to engage the belt, and friction means between the support and pulley arranged to cause the pulley to be pressed against the belt when the support is moved.

37. In a machine of the class described, the combination of a belt driven cutter, a shoe support movable to present a shoe to the cutter, a belt tightener, and connections between the shoe support and the tightener to cause the tightener to tighten the belt when the support is moved to carry the shoe into operative relation to the cutter.

38. In a machine of the class described, heel breasting means, a shoe support, means 0n the support for determining by engage- 'ment with the heel the position of the shoe in its longitudinal median plane, and membets on the support having surfaces extending perpendicularly to the shoe bottom and separated a distance greater than the width of the shoe to determine by alternative engagement with the edge of the forepart of thesole the angular relation of the longitudi-n'al median plane of the shoe to the breasting means in breasting right and left heels.

'39. In a machine of the class described,

heel breasting means, a shoe support, means for determining the position of. the shoe in its longitudinal medianplane, and members having surfaces extending perpendicularly to the shoe bottom and separated a distance greater than the width of the shoe to deter mine by alternative engagement with the edge of the forepart of the sole the angular relation of the longitudinal median plane of the shoe to the breasting means in breasting right and left heels.

40. In a machine of the class described, heel breasting means, a shoe support, means for determining the position of the shoe in its longitudinal median plane, and means extending perpendicularly to the shoe bot tom and normally separated to determine by alternative engagement with the edge ofthe forepart of the sole the angular relation of t e longitudin l med pl ne of the s to the breasting means in breasting right and left heels. 7

In te tim ny h eof I h ve ign y name o is spel ificat n- LOUIS A, CASGBAIN. 

